The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Sep. 24, 2019
Filed:
Sep. 14, 2015
Hewlett Packard Enterprise Development Lp, Houston, TX (US);
Naveen Bali, Durham, NC (US);
Tao Jin, Durham, NC (US);
Hewlett Packard Enterprise Development LP, Houston, TX (US);
Abstract
Storage arrays, systems and methods for processing commands to enable SCSI-level forwarding between an active controller and a standby controller are provided. In one example, the standby controller has ports that operate in an asymmetric logical unit access (ALUA) standby (SB) mode. One such method includes receiving a command by a port of the standby controller, wherein the port operates in the ALUA SB mode. The method includes identifying that the command is of a type that is predefined for forwarding, and forwarding the command from a SCSI layer of the standby controller to a SCSI layer of the active controller. The method further includes processing the command in a user space of the active controller to generate return data and forwarding the return data from the active controller to the standby controller. The method additionally includes sending the return data to the initiator, over the port of the standby controller.